| Patent application number | Description | Published |
|---|
| 20080226231 | Multi-Channel Optical Rotary Coupling of Low Reflectance - An optical rotary joint comprises a first collimator arrangement for coupling-on first light-waveguides, and a second collimator arrangement for coupling-on second light waveguides, with the second collimator arrangement being supported to be rotatable relative to the first collimator arrangement about a rotation axis. At least one derotating optical element is provided in the light path between the first collimator arrangement and the second collimator arrangement. At least one collimator arrangement comprises a rod-shaped lens that is fastened on a support plate so that the axis of the lens is tilted at a given angle relative to the rotation axis of the rotary joint. | 09-18-2008 |
| 20080317407 | Optical Rotating Data Transmission Device of Short Overall Length - An optical rotating data transmission device comprises a first collimator arrangement for coupling-on first optical waveguides, a second collimator arrangement for coupling-on second optical waveguides, which is supported to be rotatable relative to the first collimator arrangement about a rotation axis, and a derotating element such as a Dove prism in a light path between the collimator arrangements. At least one collimator arrangement comprises a deflecting element which deflects light entering the device from optical waveguides positioned at an angle to the direction of the rotation axis to travel along the direction of the rotation axis, or deflects light traveling along the direction of the rotation axis to exit the device at an angle to the rotation axis towards optical waveguides. | 12-25-2008 |
| 20090162012 | Lens Arrangement for Optical Rotating Data Transmission Devices in Arbitrary Surrounding Media - A rotating data transmission device for optical signals comprises two collimator arrangements for coupling light-waveguides, the collimator arrangements being rotatable relative to each other, and a derotating element being interposed in a light path between the collimator arrangements. At least one collimator arrangement comprises a lens system with a micro-lens array, and a light-waveguide holder firmly mounted to the micro-lens array with an intermediate space between the holder and the micro-lens array. At least one light-waveguide for supplying or collecting light to or from a micro-lens is fastened to both the micro-lens array and to the holder to prevent bending loads with attendant shifts of a mode field from acting upon the light-waveguide between the holder and the micro-lens array. | 06-25-2009 |
| 20090279829 | Lens Arrangement for Optical Rotary Joints - According to one embodiment, an optical rotary joint comprises a first collimator arrangement for coupling-on first light-waveguides, and a second collimator arrangement for coupling-on second light-waveguides, with the latter being rotatably supported relative to the first collimator arrangement about a rotation axis. A Dove prism is provided between the first and second collimator arrangements as a derotating element. The first and second collimator arrangements have at least one micro-lens array on which light-waveguides with associated ferrules are disposed. In order to avoid tensile forces from arising in the arrangement, or as a result of individual ferrules becoming interconnected by an applied adhesive, trenches, barriers, or also coatings are provided between the individual ferrules. | 11-12-2009 |
| 20090303580 | Lens System with Position Adjustment - In a lens system, such as for use in optical rotary joints, obliquely tilted cavities are inserted in a light path between light-waveguides and lenses to be coupled thereto in order to compensate lateral displacements between the light waveguides and the lenses. The cavities are filled with an optical medium having a predetermined refractive index in order to achieve a parallel displacement of a light-ray path, so that the ray path passes centrally through the lenses. | 12-10-2009 |
| 20100189394 | Multi-Channel Optical Rotary Coupling of Low Reflectance - An optical rotary joint comprises a first collimator arrangement for coupling-on first light-waveguides, and a second collimator arrangement for coupling-on second light waveguides, with the second collimator arrangement being supported to be rotatable relative to the first collimator arrangement about a rotation axis. At least one derotating optical element is provided in the light path between the first collimator arrangement and the second collimator arrangement. At least one collimator arrangement comprises a rod-shaped lens that is fastened on a support plate so that the axis of the lens is tilted at a given angle relative to the rotation axis of the rotary joint. | 07-29-2010 |
| 20100266294 | Multi-Channel Optical Rotary Transmission Device with High Return Loss - An optical rotating data transmission device comprises a first collimator arrangement for coupling-on first light-waveguides, and a second collimator arrangement for coupling-on second light-waveguides, which is supported to be rotatable relative to the first collimator arrangement about a rotation axis. A Dove prism is provided between the collimator arrangements as a derotating element. Furthermore, the collimator arrangements pre provided with adapter elements having rotationally symmetrical conical faces. Prism adapter elements are disposed on the end faces of the Dove prism and have prism adapter elements on the sides facing the collimator arrangements. These also have rotationally symmetrical conical faces with a surface configuration that is inverse to that of the adapter elements of the collimator arrangements. | 10-21-2010 |
